The plantar plate of the fourth MTP joint provides the plantar floor of the fourth metatarsophalangeal articulation, resisting hyperextension and distributing forefoot load.
| Origin | Plantar neck of the fourth metatarsal, through thin capsular fibres |
|---|---|
| Insertion | Plantar base of the proximal phalanx of the fourth toe |
Resists fourth MTP hyperextension and prevents dorsal proximal phalanx subluxation under the fourth metatarsal head.
Fourth MTP plantar plate tears are less common than second and third but produce lesser metatarsalgia. Combined plantar plate repair and Weil osteotomy addresses symptomatic tears.
Fourth MTP plantar plate insufficiency producing plantar fourth metatarsal pain and fourth toe instability, managed by plantar plate repair and Weil osteotomy.
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